Grease-cup.



No. 879,026. PATENTED FEB. 11, 1908. F. BBBMER.

GREASE CUP. APPLICATION PILED JULY 31, 1906.

UNITED STATES PATENT OFFICE.

FRANK BEEMER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO AUGUSTUS G. BUZBY,

. OF PHILADELPHIA, PENNSYLVANIA.

GREASE-CUP.

Application filed July 31. 1906. $erial N0n 328530.

T 0 all whom it may concern:

Be it known that I, FRANK BEEMER, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Grease- Cups, of which the following is a specification.

This invention relates to improvements in grease cups. I

The object of the invention is to provide a cup that will feed what is known as liquid grease, or a lubricating fluid "of heavy density.

Appreciating the great advantages in the eflicieney of lubrication of a grease of heavy density, or a liquid grease, and also the great economy that results, I have devised. a cup which practice has demonstrated will perfectly and uniformly feed a grease of this character.

The invention comprises in the main a novel formation of the bottom of the cup so that substantially the entire weight of the volume of column of lubricant in the cup will be directed to a single central point, and in so shaping the outlet that the weight of the volume of lubricant will be suflicient to feed the grease infallibly, and in the special construction of the cup immediately adjacent to and below the point of outlet so that the grease or lubricant will be dropped directly upon the bearings, shaft, or other parts to be lubricated, without passing over the surface of any considerable quantity of metal, which would cause accumulations of grease on the exposed parts, and. ultimately build up layers of lubricant, that, growing, would stop up the outlet,

The invention further consists in details of construction which will be hereinafter described and claimed.

In the drawings illustrating the invention: Figure 1 is a central vertical section of the oil cup constructed in accordance with my invention, a regulating stem being raised, or in position it occupies when the oil is being fed. Fig. 2 is a perspective view of the regulating stem removed. Fig. 3 is a detail perspective view of the adjustable cam-carrying cup, in connection with which the stem operates to seat and unseat the end of the stem or to raise and. lower the stem with relation to the outlet to regulate the how of grease or lubricant.

The cup is of the kind commonly known as sight feed cups.

The numeral 1 designates the bottom or floor of the cup which extends gradually downward from the point a to the outlet 1), thus forming an uninterrupted substantially cone-shaped interior surface which sup orts substantially the entire weight of the column of lubricant within the cup. The bottom of the cup converges into a sharp or fine nipple 2, which presents a seat for the regulating stem 3. This stem will be later described in detail. v

The numeral 4' designates a connection interiorly threaded at its upper end as indicated at 5, which engages corresponding threads on the bottom of the cup, by which obviously the connection is secured to the main body of the cup. The walls of the connection, it will be seen, are entirely clear of the nipple 2, thereby permitting the lubricant to drop free from the main column of lubricant through the outlet to the part to be lubricated. The connection is provided with the usual windows 6, just below the end of the nipple, and is further provided at its lower end with the threaded portion 7, for insertion into the threaded-opening of the bearing, or any piece of machinery to be lubricated. As before suggested, the bottom of the cup converges to an extremely fine edge preferably just sufficient to form a seat for the lower end of the stem, for the purpose as above suggested, of providing a minimum surface over which the liquid grease passes in. dropping from the cup, thus giving no chance for the accumulation of the heavy grease on extensive surfaces whereon it might build up and ultimately close the opening or reduce it to such size as to result in ine'flicient lubrication. By thus forming the nipple, at the point of outlet, the weight- Patented Feb. 11, 1908. v

terposed a spiral spring 13. The screw-cap 12 is threaded internally, as indicated at 14 so as to be adjustable up and down, upon the threaded portion 15, of the upper part of the sleeve 9. This sleeve extends through a threaded enlargement 16, of the metallic cap 17, which rests upon the upper edge of the glass cylinder or body proper of the cup. Ad justment of the screw-cap 12 is effected upon the sleeve 9 by means of a set screw 18. The ca is made with a cam surface 19 with a low polnt c and a comparatively high point 61, the point (if having a semi-circular recess 20 for the reception of a laterally extending pin 21 carried by the upper part of the stem. At its upper end the stem carries a milled head 22 which is a means for conveniently turning the stem in regulating the flow of grease or lubricant. In operation the pin 20 rides upon the cam surface 19 either up or down, as the exigencies of the case may require, thus raising or lowering the stem against the influence of the spring 13, which ever exerts a tendency to seat the stem, or to keep it at the lowest possible point as governed by the position of the screw-cap 12. At the extreme upper position of the stem, under any predetermined adjustment, the pin 21 rests in the recess 20 and obviously holds the stem in raised position, or in the highest position possible under a given adjustment.

When in a particular case, only two movements of the stem are required, one to open the outlet and the other to seat the stem and close the outlet, the cap 12 is so positioned upon the sleeve 9 that a movement of the pin from the lower point 0 of the cam-surface to the higher point (1 of said surface, will be sufficient to effect an opening. In other cases it may be desired never to entirely close the outlet, but to merely vary its area, and under these conditions the cap is adjusted upon the sleeve at a higher point so that the movement of the stern will be up and down some distance above the outlet.

Claims.

1. A grease cup, formed with an uninterrupted substantially cone-shaped bottom, whereby the entire weight or volume of lubricant will be directed to the point of outlet, said bottom converging at the outlet point into a nipple, and a connection attached to the bottom of the cup and having a passage therethrough of a size in excess of the size of the outlet opening in the nipple, whereby the lubricant will drop free from the point of outlet.

2. A grease cup formed with an uninterrupted substantially cone-shaped bottom, whereby substantially the entire weight of the volume of lubricant will be directed to the point of outlet, said bottom converging into a nipple presenting a sharp or fine edge, a connection attached to the bottom of the cup having a passage therethrough, of a size in excess of the size of the outlet opening in the nipple, whereby the lubricant will drop free from the point of outlet, and means for regulating the flow of the lubricant.

3. A grease cup having an uninterrupted substantially cone-shaped bottom for the purposes set forth and having a central outlet opening, a central guiding sleeve threaded at its upper end and extending above the top of the cup, a threaded cap adjustably held upon said sleeve above the cup and provided with a cam surface, a spring-pressed regulating stem movable vertically in the sleeve and carrying a pin adapted to engage the cam surface of the cap, whereby by the turning of the stem, it may be raised or lowered for regulating the flow of lubricant, and means for maintaining the stem in raised position.

4. A grease cup having an uninterrupted substantially cone-shaped bottom for the purposes set forth, and a central outlet opening, a central guiding sleeve threaded at its upper end and extending above the top of the cup, a threaded cap adjustably held upon said sleeve above the cup and provided with a cam surface, and a notch located at the highest point of-said surface, a spring-pressed regulating stein movable vertically in the sleeve and carrying a pin adapted to engage the cam surface on the cap, whereby, by the turning of the stem it is raised or lowered for regulating the flow of the lubricant, said pin being adapted to enter said notch on the cam surface for maintaining the stem in raised position, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANK BEEMER.

Witnesses:

CHAs. F. WALTER, H. S. KAESTNER. 

